Claims
- 1. An alkali-developable positive-working photosensitive resin composition which comprises, as a uniform blend:
- (a) an alkali-soluble novolac resin;
- (b) a 1,2-quinone diazide sulfonic acid ester of a condensation product having a weight-average molecular weight in the range from 400 to 2000 obtained by the condensation reaction between phenol and a hydroxybenzaldehyde in the presence of an acidic catalyst; and
- (c) an aromatic compound represented by the general formula ##STR2## in which at least one of the groups denoted by D is a naphthoquinone-1,2,-diazide-sulfonyl group, the remainder, if any, of the groups denoted by D being each a hydrogen atom.
- 2. The alkali-developable positive-working photosensitive resin composition as claimed in claim 1 in which the hydroxybenzaladehyde is o-hydroxybenzaldehyde.
- 3. The alkali-developable positive-working photosensitive resin composition as claimed in claim 1 in which the amount of the component (b) is in the range from 5 to 200 parts by weight per 100 parts by weight of the component (a).
- 4. The alkali-developable positive-working photosensitive resin composition as claimed in claim 1 in which the total amount of the components (b) and (c) is in the range from 5 to 200 parts by weight per 100 parts by weight of the component (a) and the weight proportion of the component (c) to the component (b) is in the range from 1:10 to 10:1.
- 5. The alkali-developable positive-working photosensitive resin composition as claimed in claim 1 in which the alkali-soluble novolac resin has a weight-average molecular weight in the range from 2000 to 20000.
- 6. The alkali-developable positive-working photosensitive resin composition as claimed in claim 1 in which the naphthoquinone-1,2-diazide-sulfonyl group denoted by D in the component (c) is a naphthoquinone-1,2-diazide-4-sulfonyl group or naphthoquinone-1,2-diazide-5-sulfonyl group.
- 7. The alkali-developable positive-working photosensitive resin composition as claimed in claim 4 in which the total amount of the components (b) and (c) is in the range from 5 to 200 parts by weight per 100 parts by weight of the component (a) and the weight proportion of the component (c) to the component (b) is in the range from 3:7 to 7:3.
Priority Claims (1)
Number |
Date |
Country |
Kind |
4-119571 |
Apr 1992 |
JPX |
|
BACKGROUND OF THE INVENTION
This is a continuation-in-part application from a copending U.S. patent application Ser. No. 08/046,230 filed Apr. 13, 1993, now abandoned.
US Referenced Citations (13)
Foreign Referenced Citations (9)
Number |
Date |
Country |
3718015 |
Aug 1959 |
JPX |
6228457 |
Jun 1962 |
JPX |
57-34122 |
Feb 1982 |
JPX |
211618 |
Jan 1990 |
JPX |
2300751 |
Dec 1990 |
JPX |
2300752 |
Dec 1990 |
JPX |
348249 |
Mar 1991 |
JPX |
3158856 |
Jul 1991 |
JPX |
436751 |
Feb 1992 |
JPX |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
46230 |
Apr 1993 |
|